Write a short note on distribution of velocities of gas molecules.

What is the effect of temperature on the distribution of molecular velocities?

Even though carbon dioxide is heavier than air, it does not form the lower layer, Explain. 

What are ideal and real gases? Give the points of difference between them.

What is compressibility factor? What is its value for ideal gas and real gas?

What are the faulty assumptions in the kinetic theory of gases which are responsible for deviations from ideal behaviour of gases?

Why do real gases show deviation from ideal behaviour?

What modifications were applied by Vander Waal to overcome the deviations of the gases from ideal gas behaviour?

Derive an expression for the Vander Waal's equation of state.

What is the significance of the Vander Waal's constants? Write its units for Vander Waal's constants.